How much does one lost regular customer cost a restaurant?

One regular at a café or casual venue is worth roughly RM1,296 / S$1,296 / 10,800,000₫ in revenue and RM778 / S$778 / 6,480,000₫ in gross margin over an eighteen-month tenure. That is a model, not a measurement: every assumption behind it is shown below so you can substitute your own figures E.

The assumptions, in full

The examples below are models. They use conservative assumptions stated in full so an operator can substitute their own figures. None of these are PEKO measurements in the market shown.

The row that matters

Re-acquiring a regular through a platform is cheap per order and lasting per relationship: the venue pays commission again on every subsequent order that customer places through the platform, because the relationship is held in the app rather than by the venue.

That is the real cost of losing a regular. Commission on four orders looks small next to the lifetime margin, but the arrangement does not end after four orders: once the relationship sits inside the app, every future order carries the same deduction, and the venue has no direct channel to move the customer back onto its own rails.

The other side of the model

A venue with 50 customers a day and 30% of visits from regulars does roughly 450 regular-visits a month.

If retention tooling brings one in ten regulars back one extra time a month: a lift of about 2.6 percentage points in repeat rate: that is roughly 45 additional visits, or RM810 / S$810 / 6,750,000₫ a month in incremental revenue at the assumptions above.

The underlying rule is old and well sourced: Reichheld and Sasser found in Harvard Business Review in 1990 that a five percentage point improvement in retention lifted profit by 25% to 95%, depending on the industry M-17. F&B sits at the high end, because purchase frequency is high and the cost of buying a new customer, commission plus promotion, is large relative to one order.

What this does not claim

It does not claim these lifts are guaranteed, and it does not claim Malaysian or Singaporean venues will match Vietnamese results. Substitute your own average order value, visit frequency and margin before you use any of these numbers in a decision; the point of publishing the assumptions is that you can.

Three assumptions do most of the work, so change those first. Tenure is the strongest: an eighteen-month regular is worth twice a nine-month one, and tenure is what a working retention system extends. Visit frequency is next, because it multiplies through every month of that tenure. Gross margin is last, and it is the one figure you already know precisely from your own costings: a venue running 45% rather than 60% should say so and rerun the row rather than borrow the number here.